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2. Turn on the parallel system
With utility power supply (in AC mode)
a) Turn the breakers on for each battery pack and then turn on the input breaker and power on UPS
one by one.
NOTE: The parallel UPSs cannot use the same battery pack. Each UPS should be
connected to its own battery pack.
•
At this moment, the fan is running and the UPS starts to initialize.
•
Several seconds later, UPSs operate in Bypass mode.
•
After a delay, UPS output relays close.
•
Then, parallel system supplies power to the loads via the bypass.
b) Check if the parallel information in LCD display is shown as in below pictures. If parallel UPS
systems are successfully set up, it will show “Parallel: Master”, “Parallel: Slave1” or “Parallel:
Slave2”.
Note:
If not, please do not go to next step and check if the parallel cables have been connected
properly.
Master
Slave1
Slave2
c) Press and hold the “ON” button for 0.5s and turn on the UPSs one by one.
Without utility power supply (in Battery mode)
a) Turn on the battery breaker.
b) Press the “ON” button of one UPS to turn on the power supply.
•
UPS will enter power on mode.
•
After initialization, UPS will enter No Output mode.
c) Within 15 seconds, press “ON” button again to turn on UPS
d) A few seconds later, after UPS is on, the UPS will enter Battery mode.
e) Then, repeat step b) and c) for remaining UPSs.
f)
The parallel system has been installed and starts to supply power to the load.
3. Turn off the parallel system
Press and hold the “OFF” button to turn off the UPS one by one. The buzzer will beep once. After a
delay, the UPS will enter bypass mode or no output mode synchronously.
4. Add one new unit into the parallel system
a) You cannot add one new unit into the parallel system when whole system is running. You must
remove the load and shut down the system first.
b) Make sure all of the UPSs are the parallel models and follow the connection diagram in step 1
c) Install the new parallel system.
5. Remove one unit from the parallel system
a) Press the “OFF” button twice. The UPS will enter into bypass mode or no output mode without
output.
b) Turn off the output breaker of this unit.
c) Turn off the input breaker of this unit.
d) After it shuts down, move the parallel cable and share current cable.
e) Remove the unit from the parallel system.